Cypress FM4 Series - Read Access to NAND Flash Memory

CHAPTER 14: External Bus Interface
770 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
3.3.1 Read Access to NAND Flash Memory
Figure 3-6 shows the flowchart of read access to NAND Flash memory.
Figure 3-6 Flowchart of Read Access to NAND Flash Memory
The corresponding chip select signal is fixed to L.
Issue a read command 0x00  (Base+0x1000)
Issue an address  (Base+0x2000)
Issue a status read command 0x70  (Base+0x1000)
Status read  (Base+0x0000)

Accesses to other devices (SRAM) are available during
this period (a few s)
Issue a read command 0x00  (Base+0x1000)
Status = OK?
Single page data read data  (Base+0x0000)
Turn NAND mode ON
End read access

MNALE is asserted
.

MNALE is de-asserted.

MNCLE is asserted/de-asserted.
No
Yes
